In this tutorial, it will reuse the entire infrastructure of the previous “Hibernate one to many relationship example – XML mapping” tutorial, enhance it to support Hibernate / JPA annotation. Project Structure Review the new project structure of this tutorial. Note Since Hibernate 3.6, annotation codes are merged into the Hibernate core module, so, the […]
In this tutorial, it will reuse the entire infrastructure of the previous “Hibernate one to one relationship example – XML mapping” tutorial, enhance it to support Hibernate / JPA annotation. Project Structure See the final project structure of this tutorial. Note Since Hibernate 3.6, annotation codes are merged into the Hibernate core module, so, the
Note Due to bugs in the old DBCP code, Hibernate is no longer maintain DBCP-based connection provider, read this Hibernate thread. Now, Apache DBCP is back to active development, and many bugs are fixed and it’s more stable now. Even Hibernate doesn’t come with connection provider like C3P0 and Proxool, but you still can configure […]
Problem Configured Hibernate to use “c3p0” connection pool, but hits following warning : //… 2011-04-25_12:18:37.190 WARN o.h.c.ConnectionProviderFactory – c3p0 properties is specificed, but could not find org.hibernate.connection.C3P0ConnectionProvider from the classpath, these properties are going to be ignored. 2011-04-25_12:18:37.191 INFO o.h.c.DriverManagerConnectionProvider – Using Hibernate built-in connection pool (not for production use!) //… Look like “org.hibernate.connection.C3P0ConnectionProvider” is […]
In this tutorial, we show how to integrate Logback logging framework with Hibernate. Tools and Technologies used in this tutorial : Hibernate 3.6.3.Final slf4j-api-1.6.1 logback-core-0.9.28 logback-classic-0.9.28 Eclipse 3.6 Maven 3.0.3 1. Get SLF4j + Logback To use logback in Hibernate web application, you need 3 libraries : slf4j-api.jar logback-core logback-classic File : pom.xml <project …> […]
This tutorial will reuse and modify the previous Hibernate3.6 XML mapping tutorial, but replace the Hibernate mapping file (hbm) with Hibernate / JPA Annotation code. Technologies in this article : Maven 3.0.3 JDK 1.6.0_13 Hibernate 3.6.3.final Oracle 11g 1. pom.xml No change in pom.xml file, all previous Hibernate3.6 XML mapping tutorial dependency can be reused. […]
Problem Working with Hibernate 3.6, noticed the previous “org.hibernate.cfg.AnnotationConfiguration“, is marked as “deprecated“. Code snippets … import org.hibernate.cfg.AnnotationConfiguration; //… private static SessionFactory buildSessionFactory() { try { return new AnnotationConfiguration().configure().buildSessionFactory(); } catch (Throwable ex) { System.err.println("Initial SessionFactory creation failed." + ex); throw new ExceptionInInitializerError(ex); } } The code is still working, just keep displaying the deprecated […]
In this article, we show you how to integrate Maven3, Hibernate3.6 and Oracle11g together. In the end of this article, you will create a Java project with Maven, and insert a record into Oracle database via Hibernate framework. Tools & technologies used in this article : Maven 3.0.3 JDK 1.6.0_13 Hibernate 3.6.3.final Oracle 11g 1. […]
Problem Here’s my PC environment : Database : Oracle 11g OS Platform : Windows 7 Ultimate 64 bits JDK : 1.6 .0_24, 64 bits When I click on the Oracle SQL developer, it prompts me to key in the JDK folder. However, after I specified the JDK folder, it prompts me following error dialog box […]
Here’s a simple guide to show you how to add an Oracle JDBC driver into your Maven local repository, and also how to reference it in pom.xml Tested with Oracle database 19c and Java 8 Note Due to Oracle license restrictions, the Oracle JDBC driver is not available in the public Maven repository. To use […]
Problem Using Hibernate 3.6.3, but hits this javassist not found error, see below for error stacks : Caused by: java.lang.NoClassDefFoundError: javassist/util/proxy/MethodFilter … at org.hibernate.tuple.entity.PojoEntityTuplizer.<init>(PojoEntityTuplizer.java:77) … 16 more Caused by: java.lang.ClassNotFoundException: javassist.util.proxy.MethodFilter at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:252) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320) … 21 more Solution javassist.jar is missing, and you […]
The “maven-source” plugin is used to pack your source code and deploy along with your project. This is extremely useful, for developers who use your deployed project and also want to attach your source code for debugging. 1. Maven Source Plugin Add maven-source-plugin in your pom.xml file. pom.xml <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-source-plugin</artifactId> <executions> <execution> […]
The “maven-javadoc” plugin uses “JDK\bin\javadoc.exe” command to generate javadocs, pack in jar file and deploy along with your project. 1. Maven JavaDoc Plugin Add “maven-javadoc” plugin in your “pom.xml” file. File : pom.xml <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.mkyong</groupId> <artifactId>mkyongcore</artifactId> <packaging>jar</packaging> <version>1.0</version> <name>mkyongcore project</name> <url>http://maven.apache.org</url> <build> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-javadoc-plugin</artifactId> <executions> <execution> <id>attach-javadocs</id> <goals> […]
Problem A pom.xml file, when “mvn site:deploy” is issued, the site doesn’t deploy to the defined server and hits the HTTP error code : 405. File : pom.xml <project …> <build> <extensions> <extension> <groupId>org.apache.maven.wagon</groupId> <artifactId>wagon-webdav-jackrabbit</artifactId> <version>1.0-beta-7</version> </extension> </extensions> </build> <distributionManagement> <site> <id>sitedeployment</id> <url>dav:http://127.0.0.1/upload-sites/</url> </site> </distributionManagement> </project> See full error message : D:\workspace-new\mkyong-core>mvn site:deploy [INFO] Scanning […]
Here’s a guide to show you how to use “mvn site:deploy” to deploy your generated documentation site to server automatically, via WebDAV mechanism. P.S In this article, we are using Apache server 2.x with WebDAV enabled. 1. Enabled WebDAV See this guide to learn how to enable WebDAV access on Apache server 2.x. 2. Configure […]
During Eclipse development, it’s not practical to go outside of the Eclipse’s environment and execute Maven command in external console. In this article, we show you how to integrate Maven command with Eclipse IDE, via Eclipse’s “External Tool Configuration“. Normally, this external tool is used to run external command within Eclipse environment, and it works […]
In this tutorial, we will show you how to use Maven-Tomcat plugin to package and deploy a WAR file to Tomcat, both in Tomcat 6 and 7. Libraries used : Maven 3 Tomcat 6.0.37 Tomcat 7.0.53 Tomcat 7 Deploy URL = http://localhost:8080/manager/text Command = mvn tomcat7:deploy Tomcat 6 Deploy URL = http://localhost:8080/manager/ Command = mvn […]
Web-based Distributed Authoring and Versioning (WebDAV) allow users to read and write server folders and files via HTTP. For more detail, please refer to WebDAV Wiki and WebDAV community. Here’s a guide to show you how to enable WebDav in Apache Server 2.2.x, under Windows platform. See following steps : 1. Load WebDav in Apache […]
In Maven, you can use “mvn site” to generate a documentation site for your project information. mvn site The generated site is under your project “target/site” folder. mvn site example See a list of files generated via “mvn site” command. A sample of documentation page. Note Personally, i do not like this feature much, because […]
You can use mvn test to run unit test in Maven. Few examples : # Run all the unit test classes. $ mvn test # Run a single test class. $ mvn -Dtest=TestApp1 test # Run multiple test classes. $ mvn -Dtest=TestApp1,TestApp2 test # Run a single test method from a test class. $ mvn […]
In Maven, you can use “mvn install” to package your project and deploy to local repository automatically, so that other developers can use it. mvn install Note When “install” phase is executed, all above phases “validate“, “compile“, “test“, “package“, “integration-test“, “verify” phase , including the current “install” phase will be executed orderly. Refer to this […]
In Maven based project, many cached output existed in your “target” folder. When you want to build your project for deployment, you have to make sure clean all the cached output so that you are always get the latest for deployment. To clean your project cached output, issue this command : mvn clean See output… […]
To build a Maven based project, open your console, change to your project folder where pom.xml file is placed, and issue this command : mvn package This will execute the Maven “package” phase. Maven build lifecycle Maven is run by phases, read this default Maven build lifecycle article for more detail. So, when the “package” […]
How do you know what is the available goals of a maven plugin, for example maven-eclipse plugin – mvn eclipse:goals?. In this article, we will show you how to display the entire goals of a Maven plugin. Plugin Documentation The best solution is Googling and visit the plugin documentation, for maven-eclipse, visit this maven-eclipse plugin […]
In last tutorial, you created a Java project with Maven, but that project is not able to import into Eclipse IDE, because it is not Eclipse style project. Here’s a guide to show you how to convert the Maven generated Java project to Eclipse supported style project. 1. mvn eclipse:eclipse It’s really easy to do […]
JDBC tutorial with full example, including CRUD sql statement with JDBC Statement and PreparedStatement, interact Stored Procedure with CallableStatement, JDBC transaction and how to integrate with Spring and JSF 2.0
JDBC transaction make sure a set of SQL statements is executed as a unit, either all of the statements are executed successfully, or NONE of the statements are executed (rolled back all changes). 1. Without JDBC Transaction 1.1 A JDBC example to insert two rows and update one row. TransactionExample.java package com.mkyong.jdbc; import java.math.BigDecimal; import […]
A JDBC Statement example to send a batch of SQL commands (drop,create, insert, update) to the database. BatchUpdate.java package com.mkyong.jdbc.statement; import java.math.BigDecimal; import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.sql.Statement; import java.time.LocalDateTime; import java.util.Arrays; public class BatchUpdate { public static void main(String[] args) { try (Connection conn = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/test", "postgres", "password"); Statement statement = […]
A JDBC PreparedStatement example to send a batch of SQL commands (create, insert, update) to the database. BatchUpdate.java package com.mkyong.jdbc.preparestatement; import java.math.BigDecimal; import java.sql.*; import java.time.LocalDateTime; import java.util.Arrays; public class BatchUpdate { public static void main(String[] args) { try (Connection conn = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/test", "postgres", "password"); PreparedStatement psDDL = conn.prepareStatement(SQL_CREATE); PreparedStatement psInsert = conn.prepareStatement(SQL_INSERT); PreparedStatement […]
A JDBC CallableStatement example to call a stored procedure which accepts IN and OUT parameters. Tested with Java 8 and Oracle database 19c pom.xml <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc</artifactId> <version>8</version> <scope>system</scope> <systemPath>path.to/ojdbc8.jar</systemPath> </dependency> 1. JDBC CallableStatement 1.1 A PL/SQL stored procedure which accepts IN and OUT parameters. CREATE OR REPLACE PROCEDURE get_employee_by_id( p_id IN EMPLOYEE.ID%TYPE, o_name OUT […]
Here’s a SELECT INTO stored procedure example in Oracle database. 1. Table SQL Script DBUSER table creation script. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) 2. Stored Procedure A stored procedure, uses SELECT […]
A JDBC CallableStatement example to call a stored procedure which returns a cursor. Tested with Java 8 and Oracle database 19c pom.xml <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc</artifactId> <version>8</version> <scope>system</scope> <systemPath>path.to/ojdbc8.jar</systemPath> </dependency> 1. JDBC CallableStatement 1.1 A PL/SQL stored procedure which returns a cursor. CREATE OR REPLACE PROCEDURE get_employee_by_name( p_name IN EMPLOYEE.NAME%TYPE, o_c_dbuser OUT SYS_REFCURSOR) AS BEGIN OPEN […]
Here’s a stored procedure example in Oracle database, using Cursor to manipulate or navigate the records. 1. Table SQL Script DBUSER table creation script. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) 2. Stored […]
Here’s a DELETE stored procedure example in Oracle database. 1. Table SQL Script DBUSER table creation script. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) 2. Stored Procedure A stored procedure, delete the record […]
Mkyong.com web design is changed ~ Now, it’s more tidy, neat, elegant and optimized for fast loading. Hope you guys like it 🙂 1. Old Mkyong.com Web Design The screenshot of old mkyong.com web design, for my memory … 2. New Mkyong.com Web Design The screenshot of new mkyong.com web design, what you are viewing […]
Here’s an UPDATE stored procedure example in Oracle database. 1. Table SQL Script DBUSER table creation script. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) 2. Stored Procedure A stored procedure, accept 2 IN […]
A JDBC CallableStatement example to call a stored procedure which accepts IN parameters. Tested with Java 8 and Oracle database 19c pom.xml <dependency> <groupId>com.oracle</groupId> <artifactId>ojdbc</artifactId> <version>8</version> <scope>system</scope> <systemPath>path.to/ojdbc8.jar</systemPath> </dependency> 1. JDBC CallableStatement 1.1 A PL/SQL stored procedure to insert a row. CREATE OR REPLACE PROCEDURE insert_employee( p_name IN EMPLOYEE.NAME%TYPE, p_salary IN EMPLOYEE.SALARY%TYPE, p_date IN EMPLOYEE.CREATED_DATE%TYPE) […]
Here’s an INSERT stored procedure example in Oracle database. 1. Table SQL Script DBUSER table creation script. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) 2. Stored Procedure A stored procedure, accept 4 IN […]
Problem A simple table script in Oracle database. CREATE TABLE DBUSER ( USER_ID NUMBER (5) NOT NULL, USERNAME VARCHAR2 (20) NOT NULL, CREATED_BY VARCHAR2 (20) NOT NULL, CREATED_DATE DATE NOT NULL, PRIMARY KEY ( USER_ID ) ) No idea how to insert current date value, e.g. “04/04/2011” into “CREATED_DATE” field, via JDBC PreparedStatement. String insertTableSQL […]
A JDBC PreparedStatement example to delete a row. RowDelete.java package com.mkyong.jdbc.preparestatement.row; import java.sql.Connection; import java.sql.DriverManager; import java.sql.PreparedStatement; import java.sql.SQLException; public class RowDelete { private static final String SQL_DELETE = "DELETE FROM EMPLOYEE WHERE NAME=?"; public static void main(String[] args) { try (Connection conn = DriverManager.getConnection( "jdbc:postgresql://127.0.0.1:5432/test", "postgres", "password"); PreparedStatement preparedStatement = conn.prepareStatement(SQL_DELETE)) { preparedStatement.setString(1, "mkyong"); […]
